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    • 5. 发明授权
    • Neutral hydrocarboxycarbonyl thiourea sulfide collectors
    • 中性烃羧基硫脲硫化物收集器
    • US4556483A
    • 1985-12-03
    • US641660
    • 1984-08-17
    • Yun-Lung FuSamuel S. Wang
    • Yun-Lung FuSamuel S. Wang
    • B03D1/012B03D1/14
    • B03D1/012B03D2201/02B03D2203/02
    • New and improved collector compositions for use in froth flotation processes for the beneficiation of mineral values from base metal sulfide ores are disclosed. The collector compositions comprise at least one hydrocarboxycarbonyl thiourea compound selected from compounds of the formula: ##STR1## wherein R.sup.1 is hydrogen or R.sup.2 ; R.sup.2 is selected from saturated and unsaturated hydrocarbyl radicals, hydrocarboxy radicals and aromatic radicals; and R.sup.3 is selected from saturated and unsaturated hydrocarbyl radicals, alkyl polyether radicals and aromatic radicals, said R.sup.2 and R.sup.3 radicals, optionally, and independently, being substituted by polar groups selected from halogen, nitrile and nitro groups. The use of the hydrocarboxycarbonyl thiourea collectors provides excellent metallurgical recoveries of sulfide mineral values in froth flotation processes conducted over a very broad range of pH including acid, neutral and mildly alkaline pH.
    • 公开了用于从基础金属硫化物矿石中选择矿物值的泡沫浮选工艺中使用的新的和改进的收集器组合物。 收集器组合物包含至少一种选自下式的化合物的羧基羰基硫脲化合物:其中R 1是氢或R 2; R2选自饱和和不饱和烃基,烃羧基和芳族基; R 3选自饱和和不饱和烃基,烷基聚醚基团和芳族基团,所述R 2和R 3基团任选地和独立地被被选自卤素,腈和硝基的极性基团取代。 使用烃羧基硫脲收集器提供优异的冶金回收率,在非常广泛的pH范围内进行的泡沫浮选工艺中的硫化物矿物质值,包括酸,中性和弱碱性pH。